import axios from 'axios'
import qs from 'qs'
import { MessageBox, Message } from 'element-ui'
import store from '@/store'
import { getQueryObject } from '@/utils'
import { getToken } from '@/utils/auth'

// create an axios instance
const service = axios.create({
  baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
  withCredentials: true, // send cookies when cross-domain requests
  timeout: 5000, // request timeout
  headers: {
    'X-Requested-With': 'XMLHttpRequest',
    'Content-Type': 'application/x-www-form-urlencoded'
  }
})

// request interceptor
service.interceptors.request.use(
  config => {
    // do something before request is sent
    if (store.getters.token) {
      // let each request carry token
      // ['X-Token'] is a custom headers key
      // please modify it according to the actual situation
      config.headers['X-Token'] = getToken()
    }
    // 在发送请求之前做些什么
    if (config.method === 'post' || config.method === 'put' || config.method === 'delete') {
      if (config.headers['Content-Type'] !== 'multipart/form-data') {
        config.data = qs.stringify(config.data)
      }
    }
    return config
  },
  error => {
    // do something with request error
    console.log(error) // for debug
    return Promise.reject(error)
  }
)

// response interceptor
service.interceptors.response.use(
  /**
   * If you want to get http information such as headers or status
   * Please return  response => response
  */

  /**
   * Determine the request status by custom code
   * Here is just an example
   * You can also judge the status by HTTP Status Code
   */
  response => {
    let res = response.data
    let redirect = ''

    // 兼容 WE7 返回信息
    if (res.type) {
      redirect = res.redirect
      if (res.type === 'ajax') {
        res = {
          errno: res.message.errno,
          message: 'success',
          data: res.message.message
        }
      } else {
        res = {
          errno: res.type === 'success' ? 0 : 1001,
          message: '',
          data: []
        }
      }
    }

    // if the custom code is not 20000, it is judged as an error.
    if (res.errno !== 0) {
      const redirectQuery = getQueryObject(redirect)
      // 50008: Illegal token; 50012: Other clients logged in; 50014: Token expired;
      if (res.errno === 50008 || res.errno === 50012 || res.errno === 50014 || redirectQuery['a'] === 'login') {
        // to re-login
        MessageBox.confirm('您已登录状态已注销，可以取消以保留在该页面上，或者重新登录', '确认登出', {
          confirmButtonText: '重新登录',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {
          store.dispatch('user/resetToken').then(() => {
            location.reload()
          })
        })
      } else {
        Message({
          message: res.message || 'Error',
          type: 'error',
          duration: 5 * 1000
        })
      }
      return Promise.reject(new Error(res.message || 'Error'))
    } else {
      return res
    }
  },
  error => {
    console.log('err' + error) // for debug
    Message({
      message: error.message,
      type: 'error',
      duration: 5 * 1000
    })
    return Promise.reject(error)
  }
)

export default service
